More codecs (as the experimental Opus) and themes are available in plugins !

About permission required by CSipSimple :http://code.google.com/p/csipsimple/wiki/PermissionsUse

Please report your bugs to the bug tracker of the project : it helps us to make a better software !!!Users make the apps : It's opensource ! This application is distributed under GPLv3 license terms (http://www.gnu.org/licenses/gpl-3.0.txt). You can also try the development version (nightly builds) available on the project website if you experiment problems with this version.

Reviews

4.3

15,752 total

5 10,043

4 2,854

3 1,113

2 560

1 1,167

Vadim Shirokiy

great free open source no ad voip app! Dear developers! 1)Please update the list of servers of voip.ms. 2) Also, it is easy to kill the app from the recent app list. The service (or what is it called in Android) keeps running. If you run csipsimple again, it won't register on your server. Would be nice if this was fixed. 3) echo cancellation doesn't work on voip.ms lately. The other party hears their own voice. This doesn't happen on Zoiper and others. Thank you!

Timothy Cox

I love it. I'm using this at home connected to my local Asterisk server using G 722 protocol over Wifi and it is wonderful. It is a brilliant piece of software thank you so much. Integration with the dialer in my Samsung S5 is perfect. Knocked a star, app crashes on Intel proc dell venue 8

Julien Meunier

Very good open-source SIP client CSipSimple and Sipdroid are both excellent. CSipSimple is probably heavier but has a slicker UI and a better integration with the OS. Didn't notice any major difference in terms of call quality. I've been using CSipSimple lately... **Update:** not sure the development is still active -1 star

Owen Morris

Best SiP app I have tried I use Sipgate for my work phone, and wanted to run it through my mobile rather than a softphone on the PC. After trying a few solutions, including the built in sip functions, this seems to work the best. My only real problem is when connected to a WiFi hotspot, but not logged in to it, the select routing option when you try to make a call freezes and prevents me from even using my mobile provider, meaning I have to either disconnect the WiFi or log in to it before I can make *any* call

A Google User

Solid with Caveats This is a solid app. The downside is it hasn't been updated since 2014 which makes me worry about it's support going forward, however it is open source. There are tiny issues here and there but nothing showstopping. Big annoyance is I can't paste a phone number.

Kamil Páral

Works fine, but no search in contact list Seems to work fine with my VoIP account. One problem I have with it is that you can't search in your contact list, which is very inconvenient. On the other hand, the native phonebook integration (so that you're offered to call using CSipSimple instead of your standard GSM phone) does not work well either - you need to use its custom integration, but that break other services using the native integration. A last minor annoyance in a warning toast message when exiting the app.

User reviews

Vadim Shirokiy October 13, 2016

great free open source no ad voip app! Dear developers! 1)Please update the list of servers of voip.ms. 2) Also, it is easy to kill the app from the recent app list. The service (or what is it called in Android) keeps running. If you run csipsimple again, it won't register on your server. Would be nice if this was fixed. 3) echo cancellation doesn't work on voip.ms lately. The other party hears their own voice. This doesn't happen on Zoiper and others. Thank you!

I love it. I'm using this at home connected to my local Asterisk server using G 722 protocol over Wifi and it is wonderful. It is a brilliant piece of software thank you so much. Integration with the dialer in my Samsung S5 is perfect. Knocked a star, app crashes on Intel proc dell venue 8

Very good open-source SIP client CSipSimple and Sipdroid are both excellent. CSipSimple is probably heavier but has a slicker UI and a better integration with the OS. Didn't notice any major difference in terms of call quality. I've been using CSipSimple lately... **Update:** not sure the development is still active -1 star

Best SiP app I have tried I use Sipgate for my work phone, and wanted to run it through my mobile rather than a softphone on the PC. After trying a few solutions, including the built in sip functions, this seems to work the best. My only real problem is when connected to a WiFi hotspot, but not logged in to it, the select routing option when you try to make a call freezes and prevents me from even using my mobile provider, meaning I have to either disconnect the WiFi or log in to it before I can make *any* call

Solid with Caveats This is a solid app. The downside is it hasn't been updated since 2014 which makes me worry about it's support going forward, however it is open source. There are tiny issues here and there but nothing showstopping. Big annoyance is I can't paste a phone number.

Works fine, but no search in contact list Seems to work fine with my VoIP account. One problem I have with it is that you can't search in your contact list, which is very inconvenient. On the other hand, the native phonebook integration (so that you're offered to call using CSipSimple instead of your standard GSM phone) does not work well either - you need to use its custom integration, but that break other services using the native integration. A last minor annoyance in a warning toast message when exiting the app.

Back in my good books Since last update I didn't get any crashes (used to be daily) so I'll give a few more stars. Definitely the call quality is the best among Android clients. ...and I probably tried most of them./Update: just when it stopped crashing, development is discontinued...nice.

Problem with auto hangup New version +tls does auto hangs up after the receiver picks up the phone. However i can receive encrypted calls from other callers if they still have previous ver. Looks that new ver makes some problem or interprets the config in other way. For months was ok.

Once you learn it, it works great, with lots of tweaking options! On the Nexus 6p I had some issues with my voice dropping at the other end while talking, like some kind of echo cancelation issue kicking in to hard. Disabling echo cancelation did not fix it though. But, changing Audio Implementation (Media -> Audio Troubleshooting) from OpenSL-ES to Java seems to do the trick, a great improvement in quality (at least when calling my echotest endpoint; haven't tried real call yet). Thanks!

Great for YouTube! As a YouTuber, I greatly needed and searched for a VoIP call recording app. Finally I've found this out of those countless, useless apps. I love it. Now I can make better videos since my friends can join me in them. 😃

Best Love this. I'm not the tech guy, got the info for connection to our phones from IT and was able to configure myself using the built-in wizard. but I can't get it to work without WiFi so I took off one star. IT guys couldn't either.

Doesn't work 95% of the time. Accounts says registered but can't place or receive calls. It also often requires manual quit and reconnect after switching from wifi to wireless. I get it working only after a reboot, and as long as I don't go outside, or inside, or move..... Last updated November 30, 2014? I guess this is abandonware now.

Outdated, not that great Too much effort to try to get an average calling experience. I dont think this app has been updated in 2 years. Very buggy, such as calls hanging, no audio. I think its the way it's handling the codecs.

Good but weird bug The app disconnects and refuses to reconnect to my local sip with the error "Error while registering - Bad Request" every time I change a global setting. But after a while it works fine again.

Galaxy Tab S 8.4 T700 and T705 problem Works nicely on Note 3 and Tab 3 8.0 but on Tab S 8.4 both wifi and LTE due to high screen resolution contacts are over all screens, please fix cool app otherwise. Thank you.

Bad Audio Handling This app was causing my call audio to re-route from Bluetooth to the handset speaker whenever Wi-Fi would connect, even on cell calls. After months of troubleshooting I was able to determine this app alone was the cause. After uninstalling this app I no longer have that problem.

Overall great, couple annoyances Its solves biggest problem of having a non-branded/restricted app that can connect to my SIP providers. Would rate higher if UI had actual hangup button if i flip apps mid-call, and had a way to set default volume for ring and call - i find forced on-answer call volume too low.

Hmm... Love the Filter & rewrite option. For some reason, it stopped working: calls are established, but I audio isn't working, I don't hear anything. Cache cleared, reinstalled, phone rebooted, all to no avail. Zoiper or MizuDroid are working, but I kinda liked CSipSimple. CM12.1, OnePlus One

Recent went to help in handbasket Since a couple updates back it now refuses to place calls. Any calls. The server is fine and all other phones on server continue to work properly. Csipsimple is definitely the issue. Was great before and the developers have broken it recently.

Worked first time zero hassles, bye bye sipdroid! It needs to be able to save its configuration and data to Google services, or even just to memory card, otherwise you have to put all your configurations back if you reset your phone.

Why the stoopid notification thing? Can't remove the thing in the notification tray when local sip is active. Maybe not your fault but i can't stand it as it also polluted my lock screen. Had to remove it and live without local lan sip calls.

It seems to have issues staying connect in Marshmallow with doze. I'll play around and see if it's something I can fix clientside (and update the rating if so) Other than that, I love the app. It works great.

Excellent I initially installed various application but was unable to accept incoming calls and keeps logging me out. However, I was introduced to this application and it started working straight away. Also very user friendly without any problems.

much better, but a nuisance remains The server connection becomes stable now. Well done! A minor, while annoying problem is, the message shown as a preview of each thread in the texting tab is always the oldest message... Could you change it to the latest message? thank you.

Does not register account Followed setup instructions but just says registering forever, then inactive. Pants. Looked up the probem online, lots of people having same issue. Nobody has come back with a solution. Total waste of time.

Too much crashes my folks. Do not rate bad but this app crashes while groove ip connects flawlessly. Frustrating and both your apps tried was a big mess and time wasters even with the phone numbers. In installing.

Works well... If it isn't an Intel phone The app works very well on my Snapdragon phone (Zoiper fails despite using a STUN server), but on Atom based phones it just crashes instantly. Will that ever be fixed...?

Great app I have been using it for not a long period of time, but it proved itself a very good app. [Update] after writing the review, the app started lagging and takes long time to register. I uninstalled it

Free calls Allows you to make free, and secure, calls to anyone depending on your SIP provider. Integrates well with the stock dialer on your phone. The developer replies to emails promptly, courteously and fully answers questions.

Confusing It kinda works, so that's good. But the interface is poor and finding how to get all the settings correct so that Bluetooth works is a real pain. Right now it's 50-50 that the mic works. This should not be so hard.

Great. Easy to set-up and use. Integrates nicely with Android so you can use the same dialler for both normal mobile calls and VOIP but doesn't try to take over your 'phone. I've tried loads of other clients, most of which simply do not work.